Coating machine



Dec. 18, 1928. 1,695,319

. L. B. cAsE COATING MACHINE Filed Feb. 10, 1926 Patented Dec. 18, 1928.

UNITED STATES PATENT OFFICE.

LYNN B. CASE, OF NEW BRUNSWICK, NEW JERSEY, ASSIGNOR TO JOHN WALDRONCORPORATION, OF NEW BRUNSWICK, NEWJERSEY, A CORPORATION OF NEW JERSEY.

COATING MACHINE.

Application filed February 10, 1926. Serial No. 83,392.

My invention relates to coating machines, and particularly to thatclassof machine used in coating book papers, wall papers and someclasses of fabric.

the coated surface.

The number of brushes and the quality of the coating preparation usedhas a decided bearing upon the quality of the finish of the material.

The principal object of my invention is to eliminate the rotary orvibrating brushes, and immediately after the material leaves the coatinghead of the machine I provide smooth face rolls for the purpose ofdistributing the coating preparation over the surface of the materialbeing coated, and to produce an ironing effect upon the coated surfaceof the material, for the purpose of producing grade finish thereon.Other advantages and details of the a high invention will be more fullydisclosed hereinafter and as illustrated in the accompanying drawings,in which:

Fig. 1 is a side elevation of my improved coating machme showing a webof material passing therethrough to receive a coating on both of itssides, and

Fig. 2 is a fragmentary side elevation showing a web of material passingtherethrough to receive a coating on but one of its sides.

Referring to Fig. 1, a side frame of the ma chine is illustrated at 1,it being understood that such frame is duplicated at the opposite sideof the machine, and 2 illustrates a supporting frame located at thereceiving end of the coating machine, being provided with bearings 3 forthe reception of a spindle 4 on which is mounted a roll 5, of thematerial to.

be coated.

The material passes from the roll 5 in the form of a web a, passing overa roll 6 journaled in a bearing 7 forming a portion of verticalextensions 8 of the frame 2. A roll 9 is rotatably mounted in a forkedbearing 10 in the upper end of the extension 8, adapted to bear upon theweb a as it over the roll 6.

and is passes An angularly disposed table 11 is provided adjacent thedelivery side of the roll 6, and is supported by arms 12 projecting fromthe frame 2. As the material passes from the roll 6 and over the table11, it is engaged by a festooning apron 13 adapted to move in adirection whereby the material is carried toward the frame 1 of thecoating machine.

The apron 13 passes around a roll 14 rotatably mounted in bearings15secured to the frame 2. The opposite end of the apron 13 passes arounda roll 16 mounted in bearings 17, adjustable within brackets 18 securedto the receiving end of the frame of the coating machine. The festooningapron may be driven from any suitable source of power,and

at any speed desired with respect to the roll 6 to form festoons of thedesired proportions. The web a, upon leaving the festooning apron 13,passes in a substantially vertical direction around a roll119 rotatablymounted on the frame 1, and between rolls 20, 21, 22 and 23 whoseposition m ay be varied with respect to the vertical, lane of travel ofthe web a for the purpose 6 applying tension thereon, and from the roll23 the web passes over a 1 01126 rotatabl mounted on the frame 1. Asshown in ig'. 1, the material is to receive a coating on both sides, andfor this purpose spray nozzles 30 and 31 are positioned at either sideof the line of travel of the web a, the web passing from the roll 26between feed rolls 32 and 33 rotatably mounted in bearings 34 and 35respectively, said bearings being vertically adjustable within the frame1.' The rolls 32 and 33 co-operate to distribute the coating preparationevenly over the surface of the material.

The spray nozzles 30 and 31 are suitably connected by piping 36 to apump 37 which in turn is connected by a pipe 38 to the bottom of a tank39 adapted to contain the coating preparation and to receive the surplusthereof as the web a passes between the rolls 32 and 33, the tank 39being open at the top for such purpose.

As the Web a leaves the coatin head of the machine, passing between thero ls 32 and 33, it is engaged in the present instance on the bottomsurface by a smooth face roll 40, positioned immediately adjacent thedelivery side of the rolls 32 and 33. The web a is nextengaged by asmooth face roll 41 upon its upper surface and thereafter successivelyby 60 I flow of coating material is closed off from 'the spray nozzle 30by any suitable means.

rolls 42, 43, 44, 45, 46 and 47 alternately engaging the web a on itsupper and lower surfaces.

Each of the rolls 40 to 47 are provided with a shaft 48 journalle'd in abearing bracket 49 slidably mounted on a pillar 50, forming part of theframe 1 of the machine. The

bearing bracket 49 in each instance is provided with an extension 51 onwhich is mounted a motor 52 of the reversible variable speed type, andthe armature shaft of each of said motors is provided with a pulley 53adapted to receive a belt 54 which passes around a pulley 55 secured tothe shaft 48 of each of said rolls. The bracket 49 is also provided withan extending lug 56 having a threaded aperture into which extends ajack-screw 57 rotatably mounted at 58 in theframe 1 of the machine.

It will be understood that the bracket 49, pillar 50 and the jack-screw57 in each instance are duplicated at the opposite side of the machineand in order to turn both of the jack-screws 57 simultaneously, andthereby raise and lower and maintain the respective roll in asubstantiallyhorizontal plane, each of the screws 57 is provided at itslower end with a worm wheel 59, which mesheswith a worm 60 secured to atransverse shaft 61 rotatably mounted in bearings secured to theframe 1. At one end of the shaft 61 is provided a hand wheel 62 by meansof whichthe shaft may be rotated.

The rolls 4()47 are adapted to be adjusted to receive a coating on bothsides from the spray nozzles 30 and 31, and in this particular instancethe rolls 4047 are rotated in a counter-direction to that of themovement of the web a. In this manner the ironing effect above mentionedis successfully obtained.

As shown in Fig. 2, the web a is adapted to receive a coating on but oneof its faces, the web being led over the roll 26 and under a roll 26rotatably mounted in bearings secured to the frames 1, 1, adjacent theroll 33 ter of rotation of said roll. In this manner the web a iscarried below the spray nozzle 31, and thereby receives a coating on butone of its surfaces, it being understood that the In this case, wherethe web a receives a coating on but one of its sides the rolls 40, 42,44 and 46 are driven in a direction cons1st-- ent with that of thetravel of the web a, while the rolls 41, 43, 46. and 47 are driven inthe counter-direction thereto, for the purpose of producing the ironingeffect upon the coated surface and providing a support for the webadjacent its uncoated surface.

In each instance, after the web leaves the roll 47 it is engaged by abrush 65 on its upper surface and a brush 66 on its lower surface. Thesebrushes are adapted to give a final finish to the coated surface beforeit is discharged from the coating machine. Each of the brushes 65 and 66is secured to a transverse bar 67, mounted at each of its ends in a'slidable bearing 68, adapted to a guideway 69 secured to the frame 1.The bar 67, with its respective brush, may be adjusted vertically bymeans of a screw 70, passing through :1 lug 71 on theguideway 69 andbeing rotatably mounted in the bearing 68, whereby, upon rotation of thescrew the bearing 68 secured thereto may be moved relative to theguideway 69, and the pressure of the brush upon the surface of the web avaried to any desired extent.

As the web a passes from the brushes 65 and 66 it is engaged on itslower side by a felt roll 75. The roll 7 5 is mounted in a mannersimilar to the rolls 40 .47 in an adjustable bearing 76 provided with abracket supporting a motor 77, by means of which the felt r0117 5 ma berotated.

The bearing (.6 is provided with a second bracket 78 adapted to supporta water pan 79 into which the lower side of the roll projects. As theroll 75 is rotated within the pan 79 a certain amount of water iscarried by the roll 75, upward, against the lower surface of the web afor the purpose of moistening the web, in order that it may be moreefficiently handled by the succeeding machinery to which it passes fromthe coating machine.

In order to control the amount of moisture carried by the roll 75 to theweb a, I provide a scraper board or wood doctor 80 adjustably mounted onthe pan 7 9 in such a manner that the pressure of the wood doctor 80upon the surface of the roll 75 may be minutely controlled. For thispurpose the wood doctor is provided with end bearings 81 adapted toreceive a threaded end 82 of the shaft 83 having at its opposite endahand wheel 84, by which said shaft may be rotated. The threaded end ofthe shaft is rotatably mounted in bearings 85, 85 formed on a. bracket86 secured to the pan 79.

The roll 75 and pan 79 may be adjusted I claim:

1. In a machine for coating web material, the combination of a coatinghead comprising a spray nozzle for applying a coating preparation to thesurface of the material; means fordistributing the coating preparationevenly over the surface of the material comprising a pair of cooperatingrolls between which the material passes; and means for applying a finishto the coated surface of the material, comprising a series of smoothface rolls adapted to be rotated in engagement with the surface of thematerial, some of said rolls being rotated in a manner to producerelative movement between the faces of these rolls and the surface ofthe material. 2. In a machine for coating web material, the combinationof a coating head comprising a spray nozzle for applying a coatingpreparation to the surface of the material; means for distributing thecoating preparation evenlyover the surface of the material comprising apair of cooperating rolls between which the material passes; and meansfor applying a finish to the coated surface of the materiah'comprisingsmooth face rolls adapted to rotate in engagement withthe coated surfaceof the material, in. a counterdirection to that of the travel of saidmaterial.

3. In a machine for coating Web material, the combination of a coatinghead comprising a spray nozzle for applying a coating preparation to thesurface of the material;

means for distributing the coating preparation evenly over the surfaceof theimaterial comprising a pair of cooperating rolls between which thematerial passes; means for applying a finish to the coated surface ofthe material, comprising a series of smooth face rolls adapted to rotatein engagement with the coated surface of the material, in acounter-direction to the travel thereof; and a second'series of smoothface .rolls adapted to rotate in engagement with the uncoated surface ofthe material and in a direction consistent with the direction of travelof said material.

4;. In a machine for coating web material, the combination of a coatinghead comprising a spray nozzle for applying a coating preparation to thesurface of the material; means for distributing the coating preparationevenly over the surface of the material comprising a pair of cooperatingrolls between which the material passes; means for applying a finish tothe coated surface of the material, comprising smooth face rolls adaptedto rotate in engagement with the coated surface of the material, in acounterdirection to the travel thereof; and means for controlling therelative amount of surface engagement between the rolls and thematerial.

5. In a machine for coating web material,

adapted to be rotated in engagement with the surface of the material;and stationary brushing means adapted to engage the surface of thematerial, as it passes through the machine for completing the finishingoperation.

6. In a machine for coating web material, the combination of a coatinghead comprising a spray nozzle for applying'a wet coating preparation tothe surface of said material; means for distributing the coatingpreparation evenly over the surface of the material comprising a pair ofcooperating rolls between which'the material passes; and means forapplying a finish to the coated surface of the material, comprisingsmooth face rolls adapted to rotate in engagement with the coatedsurface of the material; and means for moistening the web material as itis discharged from the machine to prevent checking of the finishedsurface as the material dries, and means for controlling the amount ofsurface engagement of the material with the moistening means.

7. In a machinefor coating web material, the combination of a coatinghead comprising a spray nozzle for. applying a coating preparation tothe surface of said material; means for distributing the coatingpreparation evenly over the surface of the material comprising a pair ofcooperating rolls between which the material passes; means for applyinga finish to the coated surface of the material comprising smooth facerolls adapted to rotate in engagement with the coated surface of thematerial; and means for adusting the rolls, individually, with respectto each other, whereby the amount of relative surface engagement betweentherolls and the material may be minutely con- I trolled.

8. In a machine for coating w'eb material, the combination of a coatinghead comprising a spray nozzle for applying a coating preparation to thesurface of the material; means for distributing the coating preparationevenly over the surface of the material comprising a pair of cooperatingrolls between which the material passes; means for applying a finish tothe coated surface of the material, comprising a series of smooth facerolls adapted to rotate in engagement with the coated surface of thematerial, in a counter-direction to the travel thereof; a second seriesof smooth face rolls adapted to rotate in engagement with the uncoatedsurface of the matecomprisingsmooth face rolls adapted to be a spraynozzle for applying a wet coating preparation to the surface of thematerial; means for distributing the coating preparation evenly over thesurface of the materialv :omprising a pair of cooperating rolls betweenwhich the material passes; means for applying a finish to the coatedsurfaceof the material,

rotated in engagement with the surface of the material; means forbrushing the coated surface of the material to complete the finishingoperation; and means for moistening the web material as it is dischargedfrom the coating machine to prevent checking of the finished surface asthe material dries, and means for controlling the amount of surfaceengagement of the material with the moistening means.

10. In a machine for coating web material, the combination of means forsupporting a roll of uncoated web material; feed rolls for removing thematerial from said roll; means for forming the withdrawn material intofestoons to relieve the web of roll tension as it passes to the coatingmachine; a coating head for applying a coating preparation to thesurface of the material; rolls for distributing the coating preparationevenly over the'surfaceof the material and whereby the material iswithdrawn from the festoons and through the coating head; adjustableretarding rolls for applying a definite tension to the material in thecoating head; finishing rolls adapted to engage the coated surface; andmeans for rotating said rolls in a counter-direction to the travel ofthe material, for producing an ironing effect upon said coated surface.

11. In a machine for coating web material, the combination of a coatinghead for applying a coating preparation to the surface of the material;means for distributing the coating preparation evenly over the surfaceof the material; means for applying a finish to the coated surface ofthe material, comprising smooth face rolls adapted to be rotated inengagement with the surface of the material; stationary brushes adaptedto engage the surface of the material as it passes through the machineto complete the finishing operation; and means for adjusting the brusheswith respect to the surface of the material, whereby the pressureexerted by the brushes on the material may be minutely controlled.

12. In a machine for coating web material, the combination of a coatinghead for applying a wet coating preparation to the surface of thematerial; means for distributing the coating preparation evenly over thesurface of the material; means for applying a finish to the coatedsurface of the material, comprising smooth face rolls adapted to rotatein engagement with the coated surface of the material;

and moistening means for and to prevent the each side of the machine; acoating head comprising a spraynozzle means for distributing coatingpreparation evenly over the surface of the material comprising a pair ofcooperating rolls between which the material passes means for applying afinish to the coated surface of the material, comprising a series ofsmooth face rolls adapted to rotate in engagement with the coatedsurface of the material;

means on each side of the machine for moving the respective ends of theroll perpendicular to the normal plane of the material, to change theamount of surface contact between each roll and the material; and meansfor simultaneously 0 crating the roll adjusting means at each en of theroll.

LYNN B. CASE.

